The Nike Lady Sphere Dry Half-Zip Running Top features warm thermal fabric & excellent quick dry fabric to help your run & training more efficient than ever. Its lightweight warm fabric (Nike Sphere Thermal) offers unrivalled insulation yet lightweight experience during highly intensive training. While Nike Sphere Dry provide maximum insulation from cold & wind while reducing weight & bulk. This running top is designed so that it can be worn alone or as part of a multi-layering system. This running top also feature a thumbholes that help provide extra warmth & comfort. They also help keep the sleeve cuffs in place, keeping you as comfortable as possible. An asymmetrical half-zip design minimizes chaffing to increase comfort. The woven overlays & lower, side & underarm gussets feature Dri-FIT fabric to help wick sweat away to the surface, where it quickly evaporates. The silicone coating on the upper woven overlay enhances durability & coverage in inclement weather.